Rotary hoe or cultivator.



K. H.'W. L. $50K. ROTARY HOE 0B. GULTIVATOR.

APPLICATION FILED JAN.17, 1913,

Patented Aug. 12, 1913.

UNITED STATES PATEN CE.

KARL HEINRICH WILHELM LUDWIG SECK, OF MANNHEIM, GERMANY, ASSIGNOR TO THE FIRM OF HEINRICH LANZ, OF MANNI-IEIM, GERMANY.

ROTARY HOE OR CULTIVATOBI.

Specification of Letters Patent.

Patented Aug. 12, 1913.

To all whom it may concern Be it known that I, KARL HEINRICH VVIIF HELM LUDWIG SECK, a subject of the German Emperor, residing at 22 Augusta Anlage, Mannheim, in the German Empire, have in vented certain new and useful Improvements in Rotary Hoes or Cultivators, of which the following is a specification.

This invention relates to improvements in the hoe blades of rotary hoes or cultivators and has for its object to provide an improved construction whereby flexibility is given to the hoe blade and whereby the accumulation of earth in the corners between the hoe blade and the piece connecting the blade with the usual disk, is prevented.

According to the present invention the hoe blade is secured on the outwardly turned ends of a pair of juxtaposed metal plates, the metal plates being bent in such a manner and being of such material as to give flexibility to the blade in all directions. In order to prevent the accumulation of earth in the corners, the metal plates are bent outwardly to form rounded corners at the rear, which converge and unite for- Wardly.

In order that the invention may be more clearly understood, reference is made to the accompanying drawings which show the preferred construction of the rotary hoe or cultivator.

Figure l is a side View of the hoe blade detachedfrom the carrying disk. Fig. 2 is an edge view taken from the left of Fig. l, and'Fig. 3 is an inverted plan view of Fig. 1. Fig. 4C is a side view showing the carrying disk with the hoe blades mounted thereon.

Secured upon the carrying disk D is a plurality of substantially trapezoidalshaped metal plates A connected together in juxtaposed position in pairs and bent outwardly at their outer ends to form end portions or lugs a and a respectively. The lugs a and a are so bent outwardly as to form rear rounded corners a and a respectively, these rounded corners converging and uniting forwardly so as to form a beak-shaped connection between the outwardly turned end portions a and a and the metal plates A. The hoe blade B is secured to the outwardly turned end portions (4 and a by riveting or in other suit able manner. By this means flexibility is obtained between the hoe blade and the metal plates A so that the hoe blades may yield in all directions, the blade 13 being capable of receding at its rear end toward the disk D by compressing the rear ends of the lugs a a while being also capable of taking up a position inclined to the metal plates A should lateral pressure be exerted upon the blade, the lug a or a as the case may be, yielding under the pressure and the blade springing back into its normal position on the pressure being relieved. It will thus be seen that a flexible hoe blade is obtained and that by this means the impacts of the blade on striking the ground will be absorbed, thus minimizing the forces to be overcome by the hoe blade. Moreover, by forming rounded corners a and a which converge and unite forwardly, the possibility of earth settling in the corners is obviat'ed.

I claim I 1. The combination in a rotary hoe or cultivator of, a pair of juxtaposed metal plates bent outwardly at one end to form flexible end portions and a hoe blade secured to said end portions.

2. The combination in a rotary hoe or cultivator of, a pair of juxtaposed metal plates bent outwardly at one end to form flexible end portions and intermediate rounded corners at the rear converging and uniting forwardly, and a hoe blade secured to said end portions.

In testimony whereof I have aiiixed my signature in presence of two witnesses.

VVILLY SECK. Witnesses H. MEYER, J osnrrr Hnirrnn.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

